<template>
<div>
  <!-- 面包屑导航区域 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>用户管理</el-breadcrumb-item>
    <el-breadcrumb-item>用户列表</el-breadcrumb-item>
  </el-breadcrumb>

  <!-- 卡片视图区域 -->
  <el-card>
    <el-row :gutter="20">
      <el-col :span="8">
        <!-- 搜索与添加区  -->
        <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
          <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
        </el-input>
      </el-col>
      <el-col :span="4">
        <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
      </el-col>
    </el-row>

    <!-- 用户列表区域 -->
    <el-table :data="userlist" border stripe>
      <el-table-column label="#" type="index"></el-table-column>
      <el-table-column label="姓名" prop="username"></el-table-column>
      <el-table-column label="邮箱" prop="email"></el-table-column>
      <el-table-column label="电话" prop="mobile"></el-table-column>
      <el-table-column label="角色" prop="role_name"></el-table-column>
      <el-table-column label="状态" >
        <template slot-scope="scope"> <!--{{scope.row}}-->
          <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作"  width="180px">
        <template slot-scope="scope">
          <!--   修改按钮  -->
          <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
          <!--   删除按钮  -->
          <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
          <!--   分配角色按钮  -->
          <el-tooltip effect="dark" content="分配角色" placement="top-start" :enterable="false">
            <el-button type="warning" icon="el-icon-setting" size="mini"
                        @click="setRole(scope.row)"></el-button>
          </el-tooltip>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页区域 -->
    <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
    </el-pagination>
  </el-card>

<!-- 添加用户对话框 -->
  <el-dialog title="提示" :visible.sync="addDialogVisible"
      width="50%" @close="addDialogClosed">
<!--  内容主体区域  -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
      <el-form-item label="用户名" prop="username">
        <el-input v-model="addForm.username"></el-input>
      </el-form-item>
      <el-form-item label="密码" prop="password">
        <el-input v-model="addForm.password"></el-input>
      </el-form-item>
      <el-form-item label="邮箱" prop="email">
        <el-input v-model="addForm.email"></el-input>
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
        <el-input v-model="addForm.mobile"></el-input>
      </el-form-item>
     </el-form>
<!--  底部区域  -->
    <span slot="footer" class="dialog-footer">
      <el-button @click="addDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="addUser">确 定</el-button>
    </span>
  </el-dialog>

<!-- 修改用户的对话框 -->
  <el-dialog title="修改用户" :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClosed">
    <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
      <el-form-item label="用户名">
        <el-input v-model="editForm.username" disabled></el-input>
      </el-form-item>
      <el-form-item label="邮箱" prop="email">
        <el-input v-model="editForm.email"></el-input>
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
        <el-input v-model="editForm.mobile"></el-input>
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="editDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="editUserInfo()">确 定</el-button>
    </span>
  </el-dialog>
  <!-- 分配角色的对话框 -->
  <el-dialog
      title="提示"
      :visible.sync="setRoleDialogVisible"
      width="50%" @close="setRoleDialogClosed">
    <div>
      <p>当前的用户：{{userInfo.username}}</p>
      <p>当前的角色：{{userInfo.role_name}}</p>
      <p>分配新角色：
        <el-select v-model="selectedRoleId" placeholder="请选择">
          <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
          </el-option>
        </el-select>
      </p>
    </div>
    <span slot="footer" class="dialog-footer">
      <el-button @click="setRoleDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
  </el-dialog>
</div>
</template>

<script>
export default {
  name: "Users",
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法邮箱
        return callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|[17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户参数列表的对象
      queryInfo: {
        query: '',
        pagenum: 1,     // 默认当前的页数
        pagesize: 2     // 默认当前每页显示多少条数据
      },
      userlist: [],
      total: 0,
      // 控制添加用户的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '用户名的长度在 3 到 10 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入登录密码', trigger: 'blur'},
          {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}]
      },
      // 控制修改用户对话的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {
        email: '',
        mobile: ''
      },
      // 修改表单的验证规则对象
      editFormRules() {
        //  email: [
        //    { required: true, message: '请输入邮箱', trigger: 'blur' },
        //    { validator: checkEmail, trigger: 'blur' }
        //  ],
        //  mobile: [
        //    { required: true, message: '请输入手机号', trigger: 'blur' },
        //    { validator: checkMobile, trigger: 'blur' }
        // ]
      },

      // 控制分配角色对话的显示与隐藏
      setRoleDialogVisible: false,

      // 需要被分配角色的用户信息
      userInfo: {},

      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色id值
      selectedRoleId: ''
    }
  },

  created() {
    this.getUserList()
  },

  methods: {
    async getUserList() {
      const {data: res} = await this.$http.get('users', {params: this.queryInfo})
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败!")
      } else {
        this.userlist = res.data.users
        this.total = res.data.total
      }
      console.log(res);
    },
    // 监听 pagesize 改变事件
    handleSizeChange(newSize) {
      // console.log(newSize);
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变事件
    handleCurrentChange(newPage) {
      // console.log(newPage);
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChange(userinfo) {
      console.log(userinfo)
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        this.userinfo.mg_state = !this.userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },

    // 监听添加用户对话框的的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加用户预校验
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid);
        if (!valid) {
          return;
        }
        // 没有被return出去，则可以发起真正的添加用户的网络请求
        const {data: res} = await this.$http.post('users', this.addForm)
        // console.log(res);
        if (res.meta.status !== 201) {
          return this.$message.error('创建用户失败')
        }
        this.$message.success('创建用户成功')
        // 隐藏添加的对话框
        this.addDialogVisible = false
        // 重新获取用户数据列表
        await this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id);
      const {data: res} = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data

      this.editDialogVisible = true
    },
    // 监听修改用户对话框重置关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交，预验证
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        console.log(valid);
        if (!valid) return
        // 发起用户修改的数据请求
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {email: this.editForm.email, mobile: this.editForm.mobile})
        if (res.meta.status !== 200){
          return this.$message.error('更新用户信息失败')
        }
        // 提示修改信息成功
        this.$message.success('更新用户信息成功')
        // 刷新数据列表
        await this.getUserList()
        // 关闭对话框
        this.editDialogVisible = false
      })
    },

    // 根据Id删除用户的信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch( err => err)    //这个错误返回给了confirmResult去接收

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
     // console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }else{
        console.log('确认了删除');
      }
      const {data: res} = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      await this.getUserList()
    },

    // 展示分配角色对话框
    async setRole(userInfo){
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有角色的列表
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data

      // 在展示对话框之前，获取所有角色的列表
      this.setRoleDialogVisible = true
    },

    // 点击确定按钮 分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色')
      }
      const {data: res} = await this.$http.put(
          `users/${this.userInfo.id}/role`,
          {rid: this.selectedRoleId})

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }this.$message.success('分配角色成功')

      await this.getUserList()
      this.setRoleDialogVisible = false
    },

    // 监听分配角色对话框关闭事件 --> 重置 分配新角色 变成 请选择
    setRoleDialogClosed() {
      this.selectedRoleId = '',
      this.userInfo = {}
    }
  }
}
</script>

<style scoped>

</style>